How Can I Efficiently Read and Parse a Large JSON File into an Array in C#?

Efficiently Processing Large JSON Files in C#

Working with extensive JSON files in C# requires optimized techniques. This guide outlines an efficient method using Newtonsoft.Json (Json.NET).

The key steps to read a large JSON file and extract data into an array are:

1. Stream-Based Reading: Instead of loading the entire file into memory at once, use StreamReader to read the JSON data in a stream. This prevents memory overload.
2. JSON Deserialization: Leverage JsonConvert.DeserializeObject from Json.NET to parse the JSON stream into a strongly-typed list of objects. This provides structured access to the data. Alternatively, use dynamic deserialization for flexible access if your JSON structure is not precisely known.
3. Targeted Data Extraction: Define a C# class mirroring the JSON structure for efficient and type-safe data access. This allows easy extraction of specific fields into arrays or other data structures.

This approach ensures efficient memory management and structured data handling, making the processing of large JSON files in C# significantly more manageable.

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